This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
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You're on a roll — Here are the answers to your questions: ii) Describe how you would prepare crystals of sodium nitrate starting with 200 cm^3 of 2M sodium hydroxide. Step 1: Measure 200 cm^3 of 2M sodium hydroxide solution into a beaker. Step 2: Add 2M nitric acid dropwise to the sodium hydroxide solution while stirring, using an indicator (e.g., phenolphthalein) to determine the neutralization point. Step 3: Repeat the experiment without the indicator, mixing the exact volumes of sodium hydroxide and nitric acid determined in Step 2. Step 4: Gently heat the resulting sodium nitrate solution to evaporate most of the water until it is saturated (crystallization point). Step 5: Allow the concentrated solution to cool slowly, causing sodium nitrate crystals to form. Step 6: Filter the crystals, wash them with a small amount of cold distilled water, and dry them between filter papers. iii) Write an equation for the reaction that takes place when a solid sample of sodium nitrate is heated. 2NaNO_3(s) 2NaNO_2(s) + O_2(g) 6. The flow chart below shows some reactions starting with lead (II) carbonate. Study it and answer the questions that follow. i) State the condition necessary in step 1. Heating ii) Identify I Reagent K Nitric acid (HNO_3) What's next?